Warmed Oysters in Champagne Sauce -- Paul Milne, 208 Talbot, St. Michaels, MD; Venison with Spaghetti Squash and Spaetzle-- Paul Milne, The Rainbow Room, New York, NY; Mascarpone Cheesecake with Lace Cookie and Blueberry Caramel --Kilian Weigand, Biba, Boston, MA